Tons of info on this very active forum (use the search engine for wing tubes):

If you're going to install an inspection port to deal with the wing tube, you might wanna do that first, to aid with this repair. (If you drill all th...

Towed my 10 y.o. on a tube behind a Hobie 17... got it planing in 15-20 mph wind– hilarious! It's very doable, but I thought the rigging didn't like i...